 By the 1920s, the neighborhood was notorious for its gambling, billiard halls, boxing gyms, "speakeasies", theaters, restaurants and other nightlife depicted in the hard boiled detective fiction of Dashiell Hammett, who lived at 891 Post Street, the apartment he gave to Sam Spade in "The Maltese Falcon".Also around this time, due to Red Light Abatement Act, prostitution and other vice began to be pushed out from the Barbary Coast district to the more southern and less business-occupied Tenderloin.In the mid-20th century, the Tenderloin provided work for many musicians in the neighborhood's theaters, hotels, burlesque houses, bars and clubs and was the location of the Musician's Union Building on Jones Street.